Across
1
Low-lying land surrounded by higher ground
4
Steep rock face at edge of land
5
Deep narrow valley with steep sides
8
Body of water surrounded by land
9
Goods sold to another country
10
Large natural elevation of earth
11
Region between the two tropic lines
Down
2
Wearing away of land by water or wind
3
Land surrounded by water on three sides
5
Tool for finding directions
6
Large area covered with trees
7
Cold treeless Arctic plain